|
How A Key Open The Lock
f* a! b2 ^, s- B' r开锁原理
4 {; K+ s! P2 P; V
, G5 [" S$ _2 v0 c) B
# m: O) v$ X* z/ }' u
; M& N0 Q, l& _- {+ ZHow Trumpet Functions
& K2 Z. Q8 M2 s9 Y" p小号如何工作
, j+ a% }1 C" H5 U0 b
' i4 g v& U5 z7 y) C: v+ G, z; b
2 C! K/ {* q7 Z+ i8 u, `8 e
" V5 X3 a1 q4 u- f1 _, t& n! Z6 C
# x2 W4 d! |+ fHow Coins Are Filtered- c; p2 `! c9 C8 ?4 k" W
硬币是怎样过滤分类的# d( ~4 |4 F6 V" ]- ~, Y! L) {
/ Z+ O% D- q( ~0 S% ]7 z6 }
$ f/ u( u, T. _9 j
* Q8 x- L) O U$ m+ a- `How Sewing Machine Works
, R( B; c! I1 p缝纫机工作原理5 r" n/ ]$ }' h; b2 R
$ l% v4 V# ~; @' ~! u/ H: `
- Y# G) N: I1 ?4 S1 Q5 n9 c3 h+ i9 Z" K
How a Zipper Works: R' `' B4 d5 Q+ d+ Q+ A
拉链如何工作
' _' q( }1 Z0 p. f! J3 Q Y- q4 V4 i* H) g+ c0 r
6 b0 F& e/ `0 b5 t
: A! t1 B6 p3 M ]# ~
! F$ a! h. n8 M+ J* l
How Your Heart Functions$ Y. E7 [! s+ O. E
心脏的工作原理* t- G& ]/ K( X5 c+ z: s" @3 M0 d
/ ]3 i7 [3 }' }# q _$ I
/ ~0 h# p" p& o& m# L5 k5 V1 i2 `5 F- A* T/ X# |- U
How a Gun Works C/ n9 U1 t( J, [5 `
枪的工作原理# Y, H0 v9 v7 E. G0 A5 E+ t; z
% M9 _- v, T( l) A8 f
$ _6 Z5 j2 [0 q; J
/ H& N( F! S3 ? i
7 c1 {' g; R( ~# B% m: M" y c3 x
_: j# l3 D; Q, l$ CHow a Grenade Works6 E: }+ |) i2 i) i5 f W0 ?
手榴弹如何工作1 G' k ]; R! N+ Z, V8 W
' o( ^: R( \6 [; \1 s/ a
6 L( w+ z# g4 Y% ]
' F/ G7 E$ d0 u% y" l* k( K
How a Fan Works
9 Q" K( Z' X" H$ c; [( l k0 y电扇工作原理# ^7 E+ |% c: ]
! M5 E0 D0 Z( M ]8 I) V; r& }, l4 d
1 `' _; N5 `" [) s" x( c! R0 K* }: k8 ?$ O$ W
How are necklaces made! a" S4 Z- x; y: w7 r
项链是怎么做的
' V R! ^& {3 m4 Q+ {+ Q9 m2 P: C$ Z$ r, w# y, }- D; w& J
& R1 U8 h: n; V& C. |- g3 m$ I
, I8 p6 r2 ^* ^7 V$ I- c7 g; XChain making machines
9 Q! X$ @4 a5 F环状铁链制作
5 G, g5 H' c' u4 d, f+ ?
5 x/ J% H$ x1 h o, u( N . L8 g, y, b$ z/ c
& y7 ^1 f% l, HFood processing machines
, \) c3 s' x4 l食品加工机器
: ]& \9 y5 t. r) M9 u+ D
" Q# u! t" ~( g% }" T0 D
: u: g( j, W( c# j7 E7 z4 |3 @! g) D4 m
$ G: s2 m- o5 w3 g圈圈蝴蝶饼干
! v; L" |( i% g1 e% t# q- Y$ M/ g
* M6 j& G% M% S! w- u7 d + ?$ X7 B. m3 J
; x; O: h3 P1 Z5 S6 d$ \ U0 r
8 }3 Y7 C- X/ H6 L! b* ]0 @& s奶油夹心饼干* Z3 o* t; J. A$ r8 u
; C7 x+ a7 g$ t2 q+ v6 S- J6 r5 P
: |& x/ M* }& d" E
, F/ W# P/ O5 ]( y) y脆皮甜筒
3 V4 y$ a" b* T ~ |
' C, L) J* ~9 L S; u
' Z, t/ y; ~. _- t; g; u - F$ n, W+ a; c7 v4 s
3 F" p- X* L4 Y' N
/ B1 [6 U7 n% x" u1 W麦当劳派$ h/ d, R! P3 { a6 ]5 d
! _) ^) V' t$ v9 ?. l/ C
2 A* _/ g; J3 ]0 H- W S: i
% [ x2 c, a( P( Y) P E/ ], B2 T6 Z. D& Y. w# @. o* N6 Z
Smart inventions
1 H' q, P. I" D, o# Y0 [机智的发明
; H {8 H D( S* m+ N/ A/ K# M# F. V! R8 g/ p: o) x
3 p4 j/ O! Y) `# m
- u; N& G/ j. w7 q, o+ }
|
|
这里因你而精彩
|
|
|
|
|